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The WTA 125K series was the secondary professional tennis circuit organised by the Women's Tennis Association. The 2015 WTA 125K series calendar consists of six tournaments, each with a total prize fund of $125,000.^[1][2] After 2014, both the Suzhou, and Ningbo events folded, with Suzhou being replaced by a tournament in Dalian, and new events starting in Carlsbad and Hua Hin.

Week of	Tournament	Champions	Runners-up	Semifinalists	Quarterfinalists
July 27	Jiangxi International Women's Tennis Open Nanchang, China $125,000 – hard – 32S/16Q/16D Singles – Doubles	Jelena Janković 6–3, 7–6(8–6)	Chang Kai-chen	Han Xinyun Lu Jiajing	Duan Yingying Liu Fangzhou Wang Yafan Han Na-lae
		Chang Kai-chen Zheng Saisai 6–3, 4–6, [10–3]	Chan Chin-wei Wang Yafan
September 7	Dalian Women's Tennis Open Dalian, China $125,000 – hard – 32S/16Q/16D Singles – Doubles	Zheng Saisai 2–6, 6–1, 7–5	Julia Glushko	Wang Qiang Petra Martić	Chang Kai-chen Liu Fangzhou Sara Sorribes Tormo Wang Yafan
		Zhang Kailin Zheng Saisai 6–3, 6–4	Chan Chin-wei Darija Jurak
November 9	Open de Limoges Limoges, France $125,000 – hard (indoor) – 32S/16Q/8D Singles – Doubles	Caroline Garcia 6–1, 6–3	Louisa Chirico	Kateřina Siniaková Francesca Schiavone	Anna-Lena Friedsam Donna Vekić Kateryna Kozlova Margarita Gasparyan
		Barbora Krejčíková Mandy Minella 1–6, 7–5, [10–6]	Margarita Gasparyan Oksana Kalashnikova
	Hua Hin Championships Hua Hin, Thailand $125,000 – hard – 32S/16Q/16D Singles – Doubles	Yaroslava Shvedova 6–4, 6–7(8–10), 6–4	Naomi Osaka	Nao Hibino Wang Qiang	Liu Fangzhou Luksika Kumkhum Duan Yingying Hsieh Su-wei
		Liang Chen Wang Yafan 6–3, 6–4	Varatchaya Wongteanchai Yang Zhaoxuan
November 16	OEC Taipei WTA Challenger Taipei, Taiwan $125,000 – carpet (indoor) – 32S/8Q/16D Singles – Doubles	Tímea Babos 7–5, 6–3	Misaki Doi	Evgeniya Rodina Kirsten Flipkens	Luksika Kumkhum Liu Chang Stefanie Vögele Yaroslava Shvedova
		Kanae Hisami Kotomi Takahata 6–1, 6–2	Marina Melnikova Elise Mertens
November 23	Carlsbad Classic Carlsbad, USA $125,000 – hard – 32S/8Q/8D Singles – Doubles	Yanina Wickmayer 6–3, 7–6(7–4)	Nicole Gibbs	Maria Sakkari Jennifer Brady	Catherine Bellis Samantha Crawford Marina Melnikova Tatjana Maria
		Gabriela Cé Verónica Cepede Royg 1–6, 6–4, [10–8]	Oksana Kalashnikova Tatjana Maria

These tables present the number of singles (S) and doubles (D) titles won by each player and each nation during the season. The players/nations are sorted by: 1) total number of titles (a doubles title won by two players representing the same nation counts as only one win for the nation); 2) a singles > doubles hierarchy; 3) alphabetical order (by family names for players).

To avoid confusion and double counting, these tables should be updated only after an event is completed.

Total	Player	S	D	S	D
3	Zheng Saisai (CHN)	●	● ●	1	2
1	Tímea Babos (HUN)	●		1	0
1	Caroline Garcia (FRA)	●		1	0
1	Jelena Janković (SRB)	●		1	0
1	Yaroslava Shvedova (KAZ)	●		1	0
1	Yanina Wickmayer (BEL)	●		1	0
1	Gabriela Cé (BRA)		●	0	1
1	Verónica Cepede Royg (PAR)		●	0	1
1	Chang Kai-chen (TPE)		●	0	1
1	Kanae Hisami (JPN)		●	0	1
1	Barbora Krejčíková (CZE)		●	0	1
1	Liang Chen (CHN)		●	0	1
1	Mandy Minella (LUX)		●	0	1
1	Kotomi Takahata (JPN)		●	0	1
1	Wang Yafan (CHN)		●	0	1
1	Zhang Kailin (CHN)		●	0	1

Total	Nation	S	D
4	China (CHN)	1	3
1	Belgium (BEL)	1	0
1	France (FRA)	1	0
1	Hungary (HUN)	1	0
1	Kazakhstan (KAZ)	1	0
1	Serbia (SRB)	1	0
1	Brazil (BRA)	0	1
1	Chinese Taipei (TPE)	0	1
1	Czech Republic (CZE)	0	1
1	Japan (JPN)	0	1
1	Luxembourg (LUX)	0	1
1	Paraguay (PAR)	0	1